package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.product.dao.BrandDao;
import com.atguigu.gulimall.product.entity.BrandEntity;
import com.atguigu.gulimall.product.service.BrandService;
import com.atguigu.gulimall.product.service.CategoryBrandRelationService;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Map;


@Service("brandService")
public class BrandServiceImpl extends ServiceImpl<BrandDao, BrandEntity> implements BrandService {
    @Autowired
    private CategoryBrandRelationService categoryBrandRelationService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<BrandEntity> page = this.page(
                new Query<BrandEntity>().getPage(params),
                new LambdaQueryWrapper<BrandEntity>()
                        .eq(params.get("key") != null, BrandEntity::getBrandId, params.get("key"))
                        .or()
                        .like(params.get("key") != null, BrandEntity::getName, params.get("key"))
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void updateCascade(BrandEntity brand) {
        this.updateById(brand);
        String brandName = brand.getName();
        if (StringUtils.isNotEmpty(brandName)) {
            categoryBrandRelationService.updateBrand(brandName,brand.getBrandId());
        }
        //todo 未来级联更新
    }

}